public function view()
 {
     if (!$this->actions->isEnabled('view')) {
         Go::to404();
     }
     $this->setTitle($this->titles->get('view'));
     $data = $this->model->getTupleById($_GET["id"]);
     if (!$data) {
         Go::to404();
     }
     $this->setTemplate("default", "view");
     $this->addContent("data", $data);
     $this->addContent("h1", $this->h1->get('view'));
 }